//Deinitializes (closes) the modules that were opened for encryption/decryption
void encryption_decryption_deinit()
{
mcrypt_generic_deinit(crypt_fd);
mcrypt_module_close(crypt_fd);
mcrypt_generic_deinit(decrypt_fd);
mcrypt_module_close(decrypt_fd);
}
int64_t HHVM_FUNCTION(mcrypt_generic_init, const Resource& td,
const String& key,
const String& iv) {
auto pm = cast<MCrypt>(td);
int max_key_size = mcrypt_enc_get_key_size(pm->m_td);
int iv_size = mcrypt_enc_get_iv_size(pm->m_td);
if (key.empty()) {
raise_warning("Key size is 0");
}
unsigned char *key_s = (unsigned char *)malloc(key.size());
memset(key_s, 0, key.size());
unsigned char *iv_s = (unsigned char *)malloc(iv_size + 1);
memset(iv_s, 0, iv_size + 1);
int key_size;
if (key.size() > max_key_size) {
raise_warning("Key size too large; supplied length: %d, max: %d",
key.size(), max_key_size);
key_size = max_key_size;
} else {
key_size = key.size();
}
memcpy(key_s, key.data(), key.size());
if (iv.size() != iv_size) {
raise_warning("Iv size incorrect; supplied length: %d, needed: %d",
iv.size(), iv_size);
}
memcpy(iv_s, iv.data(), std::min(iv_size, iv.size()));
mcrypt_generic_deinit(pm->m_td);
int result = mcrypt_generic_init(pm->m_td, key_s, key_size, iv_s);
/* If this function fails, close the mcrypt module to prevent crashes
* when further functions want to access this resource */
if (result < 0) {
pm->close();
switch (result) {
case -3:
raise_warning("Key length incorrect");
break;
case -4:
raise_warning("Memory allocation error");
break;
case -1:
default:
raise_warning("Unknown error");
break;
}
} else {
pm->m_init = true;
}
free(iv_s);
free(key_s);
return result;
}
bool f_mcrypt_generic_deinit(CObjRef td) {
if (mcrypt_generic_deinit(td.getTyped<MCrypt>()->m_td) < 0) {
raise_warning("Could not terminate encryption specifier");
return false;
}
return true;
}
static int encrypt_chunk(MCRYPT td, char *buf, int size, char *key, char *iv)
{
mcrypt_generic_init(td, key, HTC_AES_KEYSIZE, iv);
mcrypt_generic(td, buf, size);
mcrypt_generic_deinit(td);
memcpy(iv, &buf[size - HTC_AES_KEYSIZE], HTC_AES_KEYSIZE);
}
/* iv should be NULL for ECB mode */
static int cached_cipher_prepare(struct cached_cipher * cipher,
unsigned char * key, unsigned char * iv)
{
int err;
/* not yet initialized or new key */
if(!cipher->valid ||
memcmp(cipher->key, key, 8))
{
if(cipher->valid)
mcrypt_generic_deinit(cipher->cipher);
cipher->valid = 0;
err = mcrypt_generic_init(cipher->cipher, key, 8, iv);
if(err < 0)
return err;
memcpy(cipher->key, key, 8);
cipher->valid = 1;
}
else if(iv) /* update IV, works for CBC decryption */
{
unsigned char dummy[8];
memcpy(dummy, iv, 8);
err = mdecrypt_generic(cipher->cipher, dummy, 8);
if(err < 0)
return err;
}
return 0;
}
void close() {
if (m_td != MCRYPT_FAILED) {
mcrypt_generic_deinit(m_td);
mcrypt_module_close(m_td);
m_td = MCRYPT_FAILED;
}
}
bool HHVM_FUNCTION(mcrypt_generic_deinit, const Resource& td) {
auto pm = cast<MCrypt>(td);
if (mcrypt_generic_deinit(pm->m_td) < 0) {
raise_warning("Could not terminate encryption specifier");
return false;
}
pm->m_init = false;
return true;
}
bool f_mcrypt_generic_deinit(CResRef td) {
MCrypt *pm = td.getTyped<MCrypt>();
if (mcrypt_generic_deinit(pm->m_td) < 0) {
raise_warning("Could not terminate encryption specifier");
return false;
}
pm->m_init = false;
return true;
}
static void php_mcrypt_module_dtor(zend_resource *rsrc) /* {{{ */
{
php_mcrypt *pm = (php_mcrypt *) rsrc->ptr;
if (pm) {
mcrypt_generic_deinit(pm->td);
mcrypt_module_close(pm->td);
efree(pm);
pm = NULL;
}
}
main() {
MCRYPT td;
int i;
char *key;
char password[20];
char block_buffer;
char *IV;
int keysize=19; /* 128 bits */
key=calloc(1, keysize);
strcpy(password, "A_large_key");
/* Generate the key using the password */
/* mhash_keygen( KEYGEN_MCRYPT, MHASH_MD5, key, keysize, NULL, 0, password, strlen(password));
*/
memmove( key, password, strlen(password));
td = mcrypt_module_open("twofish", NULL, "cfb", NULL);
if (td==MCRYPT_FAILED) {
return 1;
}
IV = malloc(mcrypt_enc_get_iv_size(td));
/* Put random data in IV. Note these are not real random data,
* consider using /dev/random or /dev/urandom.
*/
/* srand(time(0)); */
for (i=0; i< mcrypt_enc_get_iv_size( td); i++) {
IV[i]=rand();
}
i=mcrypt_generic_init( td, key, keysize, IV);
if (i<0) {
mcrypt_perror(i);
return 1;
}
/* Encryption in CFB is performed in bytes */
while ( fread (&block_buffer, 1, 1, stdin) == 1 ) {
mcrypt_generic (td, &block_buffer, 1);
/* Comment above and uncomment this to decrypt */
/* mdecrypt_generic (td, &block_buffer, 1); */
fwrite ( &block_buffer, 1, 1, stdout);
}
mcrypt_generic_deinit(td);
mcrypt_module_close(td);
return 0;
}
int
grg_tmpfile_write (const GRG_CTX gctx, GRG_TMPFILE tf,
const unsigned char *data, const long data_len)
{
long dim;
unsigned char *tocrypt;
if (!gctx || !tf || !data)
return GRG_ARGUMENT_ERR;
if (tf->rwmode == READABLE)
return GRG_TMP_NOT_WRITEABLE;
if (mcrypt_generic_init (tf->crypt, tf->key, tf->dKey, tf->IV) < 0)
return GRG_WRITE_ENC_INIT_ERR;
dim = (data_len < 0) ? strlen ((char *)data) : data_len;
tocrypt = grg_memconcat (2, gctx->header, HEADER_LEN, data, dim);
if (!tocrypt)
return GRG_MEM_ALLOCATION_ERR;
if (mcrypt_generic (tf->crypt, tocrypt, dim + HEADER_LEN))
{
mcrypt_generic_deinit (tf->crypt);
grg_free (gctx, tocrypt, dim + HEADER_LEN);
return GRG_WRITE_ENC_INIT_ERR;
}
write (tf->tmpfd, &dim, sizeof (long)); //without considering endianity, since we
write (tf->tmpfd, tocrypt, dim + HEADER_LEN); //read and write on the same system.
mcrypt_generic_deinit (tf->crypt);
grg_free (gctx, tocrypt, dim + HEADER_LEN);
fsync (tf->tmpfd);
tf->rwmode = READABLE;
return GRG_OK;
}
int encrypt_buffer(void* buf, int buf_len, char* key, int key_len) {
MCRYPT td = mcrypt_module_open("rijndael-128", NULL, "cbc", NULL);
int blocksize = mcrypt_enc_get_block_size(td);
if(buf_len % blocksize != 0) {
return -1;
}
mcrypt_generic_init(td, key, key_len, IV);
mcrypt_generic(td, buf, buf_len);
mcrypt_generic_deinit (td);
mcrypt_module_close(td);
return 0;
}
static void php_mcrypt_filter_dtor(php_stream_filter *thisfilter)
{
if (thisfilter && Z_PTR(thisfilter->abstract)) {
php_mcrypt_filter_data *data = (php_mcrypt_filter_data*) Z_PTR(thisfilter->abstract);
if (data->block_buffer) {
pefree(data->block_buffer, data->persistent);
}
mcrypt_generic_deinit(data->module);
mcrypt_module_close(data->module);
pefree(data, data->persistent);
}
}
int encrypt(void* buffer, int buffer_len, /* Because the plaintext could include null bytes*/
char* IV, char* key, int key_len) {
MCRYPT td = mcrypt_module_open("rijndael-128", NULL, "cbc", NULL);
int blocksize = mcrypt_enc_get_block_size(td);
if (buffer_len % blocksize != 0) {
return 1;
}
mcrypt_generic_init(td, key, key_len, IV);
mcrypt_generic(td, buffer, buffer_len);
mcrypt_generic_deinit(td);
mcrypt_module_close(td);
return 0;
}
int main()
{
MCRYPT m;
if ((m = mcrypt_module_open("rijndael-128", NULL, "cbc", NULL)) == MCRYPT_FAILED) { printf("MCRYPT failed\n"); return 0; }
int key_len = strlen(vector) - mcrypt_enc_get_iv_size(m);
unsigned char* key = malloc(key_len);
unsigned char* iv = malloc(mcrypt_enc_get_iv_size(m));
memcpy(key, &vector, key_len);
memcpy(iv, &vector[key_len], mcrypt_enc_get_iv_size(m));
if (mcrypt_generic_init(m, key, strlen(key), iv) < 0) { printf("init failed\n"); return 0; }
if (mdecrypt_generic(m, code, strlen(code))) { printf("decrypt failed\n"); return 0; }
if (mcrypt_generic_deinit(m) < 0) { printf("deinit failed\n"); return 0; }
mcrypt_module_close(m);
printf ("[*] Vector: ");
for (int i = 0; i < strlen(vector); i++) {
printf("%02x", vector[i] & 0xff);
}
printf ("\n[*] Vector Length: %d\n", strlen(vector));
printf ("[*] Key: ");
for (int i = 0; i < strlen(key); i++) {
printf("%02x", key[i] & 0xff);
}
printf ("\n[*] Key Length: %d\n", key_len);
printf ("[*] IV: ");
for (int i = 0; i < strlen(iv); i++) {
printf("%02x", iv[i] & 0xff);
}
printf ("\n[*] IV Length: %d\n", strlen(iv));
printf("\n[+] Shellcode: \n\n");
for (int i = 0; i < strlen(code); i++) {
printf("\\x%x", code[i] & 0xff);
}
printf("\n");
int (*ret)() = (int(*)())code;
ret();
return 0;
}
Aes256::~Aes256(void)
{
mcrypt_generic_deinit( td_.get() );
}
int main()
{
MCRYPT td, td2;
int i, t, imax;
int j, jmax, ivsize;
int x = 0, siz;
char **names;
char **modes;
char *text;
unsigned char *IV;
unsigned char *key;
int keysize;
names = mcrypt_list_algorithms (ALGORITHMS_DIR, &jmax);
modes = mcrypt_list_modes (MODES_DIR, &imax);
if (names==NULL || modes==NULL) {
fprintf(stderr, "Error getting algorithms/modes\n");
exit(1);
}
for (j=0;j<jmax;j++) {
printf( "Algorithm: %s... ", names[j]);
if (mcrypt_module_self_test( names[j], ALGORITHMS_DIR)==0) {
printf( "ok\n");
} else {
x=1;
printf( "\n");
}
printf( "Modes:\n");
for (i=0;i<imax;i++) {
td = mcrypt_module_open(names[j], ALGORITHMS_DIR, modes[i], MODES_DIR);
td2 = mcrypt_module_open(names[j], ALGORITHMS_DIR, modes[i], MODES_DIR);
if (td != MCRYPT_FAILED && td2 != MCRYPT_FAILED) {
keysize = mcrypt_enc_get_key_size(td);
key = calloc(1, keysize);
if (key==NULL) exit(1);
for (t=0;t<keysize;t++)
key[t] = (t % 255) + 13;
ivsize = mcrypt_enc_get_iv_size(td);
if (ivsize>0) {
IV = calloc( 1, ivsize);
if (IV==NULL) exit(1);
for (t=0;t<ivsize;t++)
IV[t] = (t*2 % 255) + 15;
}
if (mcrypt_generic_init( td, key, keysize, IV) < 0) {
fprintf(stderr, "Failed to Initialize algorithm!\n");
return -1;
}
if (mcrypt_enc_is_block_mode(td)!=0)
siz = (strlen(TEXT) / mcrypt_enc_get_block_size(td))*mcrypt_enc_get_block_size(td);
else siz = strlen(TEXT);
text = calloc( 1, siz);
if (text==NULL) exit(1);
memmove( text, TEXT, siz);
mcrypt_generic( td, text, siz);
if (mcrypt_generic_init( td2, key, keysize, IV) < 0) {
fprintf(stderr, "Failed to Initialize algorithm!\n");
return -1;
}
mdecrypt_generic( td2, text, siz);
if ( memcmp( text, TEXT, siz) == 0) {
printf( " %s: ok\n", modes[i]);
} else {
printf( " %s: failed\n", modes[i]);
x=1;
}
mcrypt_generic_deinit(td);
mcrypt_generic_deinit(td2);
mcrypt_module_close(td);
mcrypt_module_close(td2); free(text);
free(key);
if (ivsize>0) free(IV);
}
}
printf("\n");
}
mcrypt_free_p(names, jmax);
mcrypt_free_p(modes, imax);
if (x>0) fprintf(stderr, "\nProbably some of the algorithms listed above failed. "
"Try not to use these algorithms, and file a bug report to [email protected]\n\n");
return x;
}
void dump_testcase_block(MCRYPT td, unsigned char *key, int key_size,
unsigned char *iv, int iv_size, int data_size,
padding_t padding) {
int mc_ret;
int is_block, block_size, block_overlap, block_fill;
int i;
unsigned char *plaintext, *ciphertext;
mc_ret = mcrypt_generic_init(td, (void *)key, key_size, (void *)iv);
if (mc_ret < 0) {
mcrypt_perror(mc_ret);
return;
}
plaintext = gen_rand_data(data_size);
if (plaintext == NULL) {
return;
}
is_block = mcrypt_enc_is_block_mode(td);
if (is_block) {
block_size = mcrypt_enc_get_block_size(td);
block_overlap = data_size % block_size;
block_fill = block_size - block_overlap;
if (padding == PADDING_NONE) {
/* do nothing */
}
else if (padding == PADDING_PKCS7) {
if (block_fill == 0) {
/* ALWAYS add padding */
block_fill = block_size;
}
plaintext = (unsigned char *)realloc(plaintext,
data_size + block_fill);
for (i = 0; i < block_fill; i++) {
plaintext[data_size+i] = block_fill;
}
data_size = data_size + block_fill;
if ((data_size % block_size) != 0) {
fprintf(stderr, "bad data size!\n");
exit(1);
}
}
else if (padding == PADDING_ZEROS) {
if (block_overlap != 0) {
plaintext = (unsigned char *)realloc(plaintext,
data_size + block_fill);
for (i = 0; i < block_fill; i++) {
plaintext[data_size+i] = '\0';
}
data_size = data_size + block_fill;
}
}
else {
fprintf(stderr, "bad error\n");
exit(1);
}
}
ciphertext = malloc(data_size);
if (ciphertext == NULL) {
fprintf(stderr, "Out of memory\n");
return;
}
memcpy( (void *)ciphertext, (void *)plaintext, data_size);
mc_ret = mcrypt_generic(td, ciphertext, data_size);
if (mc_ret == 0) {
char *enc_key, *enc_iv, *enc_pt, *enc_ct;
enc_key = dump_value( (void *)key, key_size );
enc_iv = dump_value( (void *)iv, iv_size );
enc_pt = dump_value( (void *)plaintext, data_size );
enc_ct = dump_value( (void *)ciphertext, data_size );
printf("algo=%s,mode=%s,key=%s,iv=%s,padding=%s,pt=%s,ct=%s\n",
testing_algo, testing_mode, enc_key, enc_iv,
padding_name(padding), enc_pt, enc_ct);
free(enc_key);
free(enc_iv);
free(enc_pt);
free(enc_ct);
}
free(plaintext);
free(ciphertext);
mc_ret = mcrypt_generic_deinit(td);
if (mc_ret < 0) {
fprintf(stderr, "Error %d during deinit of %s in %s mode"
" (%d-byte key)\n", testing_algo, testing_mode, key_size);
return;
}
}
int main(int argc, char **argv)
{
int dev,cnt,sock;
unsigned char buf_frame[1536+sizeof(struct ether_header)];
unsigned char *buf = buf_frame+sizeof(struct ether_header);
struct ether_header *header = (struct ether_header*) buf_frame;
#ifndef __NetBSD__
struct ifreq ifr;
#endif
MCRYPT td;
char *key;
int blocksize=0;
int keysize = 32; /* 256 bits == 32 bytes */
char enc_state[1024];
int enc_state_size;
char* tun_device = "/dev/net/tun";
char* dev_name="tun%d";
if(getenv("TUN_DEVICE")) { tun_device = getenv("TUN_DEVICE"); }
if(getenv("DEV_NAME")) { dev_name = getenv("DEV_NAME"); }
if(getenv("MCRYPT_KEYFILE")) {
if (getenv("MCRYPT_KEYSIZE")) { keysize=atoi(getenv("MCRYPT_KEYSIZE"))/8; }
key = calloc(1, keysize);
FILE* keyf = fopen(getenv("MCRYPT_KEYFILE"), "r");
if (!keyf) { perror("fopen keyfile"); return 10; }
memset(key, 0, keysize);
fread(key, 1, keysize, keyf);
fclose(keyf);
char* algo="twofish";
char* mode="cbc";
if (getenv("MCRYPT_ALGO")) { algo = getenv("MCRYPT_ALGO"); }
if (getenv("MCRYPT_MODE")) { mode = getenv("MCRYPT_MODE"); }
td = mcrypt_module_open(algo, NULL, mode, NULL);
if (td==MCRYPT_FAILED) {
fprintf(stderr, "mcrypt_module_open failed algo=%s mode=%s keysize=%d\n", algo, mode, keysize);
return 11;
}
blocksize = mcrypt_enc_get_block_size(td);
//block_buffer = malloc(blocksize);
mcrypt_generic_init( td, key, keysize, NULL);
enc_state_size = sizeof enc_state;
mcrypt_enc_get_state(td, enc_state, &enc_state_size);
}
if(argc<=2) {
fprintf(stderr,
"Usage: tap_mcrypt plaintext_interface destination_mac_address\n"
"Example: tap_mcrypt wlan0 ff:ff:ff:ff:ff:ff\n"
" (note that ff:ff:ff:ff:ff:ff may work bad in Wi-Fi)\n"
" Environment variables:\n"
" TUN_DEVICE /dev/net/tun\n"
" DEV_NAME name of the device, default tun%%d\n"
" SOURCE_MAC_ADDRESS -- by default use interface's one\n"
" \n"
" MCRYPT_KEYFILE -- turn on encryption, read key from this file\n"
" MCRYPT_KEYSIZE -- key size in bits, default 256\n"
" MCRYPT_ALGO -- algorithm, default is twofish. aes256 is called rijndael-256\n"
" MCRYPT_MODE -- mode, default is CBC\n"
);
exit(1);
}
char* interface = argv[1];
char* dest_mac = argv[2];
if((dev = open(tun_device, O_RDWR)) < 0) {
fprintf(stderr,"open(%s) failed: %s\n", tun_device, strerror(errno));
exit(2);
}
#ifndef __NetBSD__
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
strncpy(ifr.ifr_name, dev_name, IFNAMSIZ);
if(ioctl(dev, TUNSETIFF, (void*) &ifr) < 0) {
perror("ioctl(TUNSETIFF) failed");
exit(3);
}
{
struct ifreq ifr_tun;
strncpy(ifr_tun.ifr_name, ifr.ifr_name, IFNAMSIZ);
if((sock = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)))==-1) {
perror("socket() failed");
exit(4);
}
if (ioctl(sock, SIOCGIFFLAGS, &ifr_tun) < 0) { perror("ioctl SIOCGIFFLAGS"); }
ifr_tun.ifr_mtu=1408;
if(ioctl(sock, SIOCSIFMTU, (void*) &ifr_tun) < 0) {
perror("ioctl(SIOCSIFMTU) failed");
}
close(sock);
}
#endif
if((sock = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)))==-1) {
perror("socket() failed");
exit(4);
}
char source_mac[6];
int card_index;
struct sockaddr_ll device;
memset(&device, 0, sizeof(device));
init_MAC_addr(sock, interface, source_mac, &card_index);
device.sll_ifindex=card_index;
device.sll_family = AF_PACKET;
memcpy(device.sll_addr, source_mac, 6);
device.sll_halen = htons(6);
parseMac(dest_mac, header->ether_dhost);
memcpy(header->ether_shost, source_mac, 6);
header->ether_type = htons(0x08F4);
if(fork())
while(1) {
cnt=read(dev,(void*)buf,1518);
//printpacket("sent", buf, cnt);
if (blocksize) {
cnt = ((cnt-1)/blocksize+1)*blocksize; // pad to block size
mcrypt_generic (td, buf, cnt);
mcrypt_enc_set_state (td, enc_state, enc_state_size);
}
//printpacket("encr", buf, cnt);
sendto(sock, buf_frame, cnt+sizeof(struct ether_header),0,(struct sockaddr *)&device, sizeof device);
}
else
while(1) {
size_t size = sizeof device;
cnt=recvfrom(sock,buf_frame,1536,0,(struct sockaddr *)&device,&size);
if(device.sll_ifindex != card_index) {
continue; /* Not our interface */
}
if(header->ether_type != htons(0x08F4)) {
continue; /* Not our protocol type */
}
cnt-=sizeof(struct ether_header);
//printpacket("recv", buf, cnt);
if (blocksize) {
cnt = ((cnt-1)/blocksize+1)*blocksize; // pad to block size
mdecrypt_generic (td, buf, cnt);
mcrypt_enc_set_state (td, enc_state, enc_state_size);
}
//printpacket("decr", buf, cnt);
write(dev,(void*)buf,cnt);
}
if (blocksize) {
mcrypt_generic_deinit (td);
mcrypt_module_close(td);
}
}
static int check_auth_cookie(request_rec *r)
{
const char *cookies = NULL, *auth_line = NULL;
char *cookie = NULL;
/* Debug. */
/*ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"check_auth_cookie called");*/
/* Get config for this directory. */
cookie_auth_config_rec *conf = ap_get_module_config(r->per_dir_config,
&auth_cookie_module);
/* Check we have been configured. */
if (!conf->cookie_auth_cookie) {
return DECLINED;
}
/* Do not override real auth header, unless config instructs us to. */
if (!conf->cookie_auth_override &&
apr_table_get(r->headers_in, "Authorization")) {
if (conf->cookie_auth_env) {
unsetenv(conf->cookie_auth_env);
}
return DECLINED;
}
/* todo: protect against xxxCookieNamexxx, regex? */
/* todo: make case insensitive? */
/* Get the cookie (code from mod_log_config). */
if ((cookies = apr_table_get(r->headers_in, "Cookie"))) {
char *start_cookie, *end_cookie;
if ((start_cookie = ap_strstr_c(cookies, conf->cookie_auth_cookie))) {
start_cookie += strlen(conf->cookie_auth_cookie) + 1;
cookie = apr_pstrdup(r->pool, start_cookie);
/* kill everything in cookie after ';' */
end_cookie = strchr(cookie, ';');
if (end_cookie) {
*end_cookie = '\0';
}
ap_unescape_url(cookie);
}
}
/* No cookie? Nothing for us to do. */
if (!cookie) {
if (conf->cookie_auth_unauth_redirect) {
const char* redirect = conf->cookie_auth_unauth_redirect;
compose_and_set_redirect(r, redirect);
return HTTP_MOVED_TEMPORARILY;
}
else {
return DECLINED;
}
}
/* Debug. */
/*ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"%s=%s", conf->cookie_auth_cookie, cookie);*/
char* aux_auth_info = "";
/* Construct the fake auth_line. */
if (conf->cookie_auth_base64) {
char* decoded_cookie = apr_palloc(r->pool, apr_base64_decode_len(cookie));
int decoded_cookie_length = apr_base64_decode(decoded_cookie, cookie);
int valid = 1;
/* if the cookie is encrypted, decrypt it in place */
if (conf->cookie_auth_encrypt) {
MCRYPT td = mcrypt_module_open("rijndael-128", NULL, "cbc", NULL);
int keysize = strlen(conf->cookie_auth_encrypt);
int blocksize = mcrypt_enc_get_block_size(td);
// We will copy the iv from the beginning of the cookie.
// The iv does not need to be null-terminated, but we will
// null-terminate it for convenience.
int iv_length = mcrypt_enc_get_iv_size(td);
char* iv = (char*) apr_palloc(r->pool, iv_length + 1);
memcpy(iv, decoded_cookie, iv_length);
iv[iv_length] = '\0';
// Take the iv off the beginning of the cookie
decoded_cookie += iv_length;
decoded_cookie_length -= iv_length;
mcrypt_generic_init( td, conf->cookie_auth_encrypt, keysize, iv);
// Encryption in CBC is performed in blocks, so our
// decryption string will always be an integral number
// of full blocks.
char* decrypt_ptr = decoded_cookie;
while (decoded_cookie_length >= blocksize) {
mdecrypt_generic(td, decrypt_ptr, blocksize);
decrypt_ptr += blocksize;
decoded_cookie_length -= blocksize;
}
if (decoded_cookie_length != 0) {
valid = 0;
}
mcrypt_generic_deinit (td);
mcrypt_module_close(td);
/*ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"mdecrypt(%s)=%s", conf->cookie_auth_cookie, decoded_cookie);*/
}
/* if the cookie did not decrypt, then do nothing */
if (valid) {
char* end_auth_info = strchr(decoded_cookie, '\t');
if (end_auth_info) {
aux_auth_info = decoded_cookie;
char* unencoded_cookie = end_auth_info + 1;
*end_auth_info = 0;
auth_line = apr_pstrcat(r->pool, "Basic ", ap_pbase64encode(r->pool, unencoded_cookie), NULL);
}
else {
auth_line = apr_pstrcat(r->pool, "Basic ", ap_pbase64encode(r->pool, decoded_cookie), NULL);
}
}
} else {
// Aux auth info and cookie encrypt features only available in base64 mode
ap_unescape_url(cookie);
auth_line = apr_pstrcat(r->pool, "Basic ",
ap_pbase64encode(r->pool, cookie), NULL);
}
/* If there is aux auth info, then set the env variable */
if (conf->cookie_auth_env) {
apr_table_set(r->subprocess_env, conf->cookie_auth_env, aux_auth_info);
}
/* Debug. */
/*ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"Authorization: %s", auth_line);*/
/* If there is no aux auth info, then force a redirect if our conf directives say that we should */
if (conf->cookie_auth_env_redirect && !strlen(aux_auth_info)) {
const char* redirect = conf->cookie_auth_env_redirect;
compose_and_set_redirect(r, redirect);
return HTTP_MOVED_TEMPORARILY;
}
else {
/* Set fake auth_line. */
if (auth_line) {
apr_table_set(r->headers_in, "Authorization", auth_line);
}
}
/* Always return DECLINED because we don't authorize, */
/* we just set things up for the next auth module to. */
return DECLINED;
}
static void cached_cipher_deinit(struct cached_cipher * cipher)
{
if(cipher->valid)
mcrypt_generic_deinit(cipher->cipher);
mcrypt_module_close(cipher->cipher);
}
void emokit_deinit(emokit_device* s) {
mcrypt_generic_deinit (s->td);
mcrypt_module_close(s->td);
}
int main()
{
MCRYPT td, td2;
int i, t, imax;
int j, jmax, ivsize;
int x = 0, siz;
char *text;
unsigned char *IV;
unsigned char *key;
int keysize;
td = mcrypt_module_open("idea", ALGORITHMS_DIR, "cbc", MODES_DIR);
td2 = mcrypt_module_open("idea", ALGORITHMS_DIR, "cbc", MODES_DIR);
if (td != MCRYPT_FAILED && td2 != MCRYPT_FAILED) {
fprintf(stderr, "Created IDEA cipher.\n");
keysize = mcrypt_enc_get_key_size(td);
fprintf(stderr, "Cipher key size %d.\n", keysize);
key = calloc(1, keysize);
if (key==NULL) exit(1);
for (t=0;t<keysize;t++)
key[t] = (t % 255) + 13;
ivsize = mcrypt_enc_get_iv_size(td);
fprintf(stderr, "IV size %d.\n", ivsize);
if (ivsize>0) {
IV = calloc( 1, ivsize);
if (IV==NULL) exit(1);
for (t=0;t<ivsize;t++)
IV[t] = (t*2 % 255) + 15;
}
if (mcrypt_generic_init( td, key, keysize, IV) < 0) {
fprintf(stderr, "Failed to Initialize algorithm!\n");
return -1;
}
if (mcrypt_enc_is_block_mode(td)!=0)
siz = (strlen(TEXT) / mcrypt_enc_get_block_size(td))*mcrypt_enc_get_block_size(td);
else siz = strlen(TEXT);
text = calloc( 1, siz);
if (text==NULL) exit(1);
memmove( text, TEXT, siz);
mcrypt_generic( td, text, siz);
if (mcrypt_generic_init( td2, key, keysize, IV) < 0) {
fprintf(stderr, "Failed to Initialize algorithm!\n");
return -1;
}
mdecrypt_generic( td2, text, siz);
if ( memcmp( text, TEXT, siz) == 0) {
printf( " %s: ok\n", "cbc");
} else {
printf( " %s: failed\n", "cbc");
x=1;
}
mcrypt_generic_deinit(td);
mcrypt_generic_deinit(td2);
mcrypt_module_close(td);
mcrypt_module_close(td2);
free(text);
free(key);
if (ivsize>0) free(IV);
}
return 0;
}
int epoc_deinit() {
mcrypt_generic_deinit (td);
mcrypt_module_close(td);
return 0;
}
